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R31538 Cobalt vs. EN 2.4952 Nickel

R31538 cobalt belongs to the cobalt alloys classification, while EN 2.4952 nickel belongs to the nickel alloys. They have a modest 22% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is R31538 cobalt and the bottom bar is EN 2.4952 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 13 to 23
17
Fatigue Strength, MPa 310 to 480
370
Poisson's Ratio 0.29
0.29
Reduction in Area, % 13 to 22
14
Shear Modulus, GPa 86
74
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
1150
Tensile Strength: Yield (Proof), MPa 580 to 930
670

Thermal Properties

Latent Heat of Fusion, J/g 320
330
Melting Completion (Liquidus), °C 1360
1350
Melting Onset (Solidus), °C 1290
1300
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
12
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
1.5

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.3
Embodied Carbon, kg CO2/kg material 8.1
9.8
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 530
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
170
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
1180
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 34 to 45
38
Strength to Weight: Bending, points 27 to 32
29
Thermal Diffusivity, mm2/s 3.5
3.1
Thermal Shock Resistance, points 25 to 33
33

Alloy Composition

Aluminum (Al), % 0
1.0 to 1.8
Boron (B), % 0
0 to 0.0080
Carbon (C), % 0.15 to 0.35
0.040 to 0.1
Chromium (Cr), % 26 to 30
18 to 21
Cobalt (Co), % 58.7 to 68.9
0 to 1.0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 0 to 0.75
0 to 1.5
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
65 to 79.2
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
1.8 to 2.7